- 377 - SECTION 518 -- FABR IC REINFORCEMENT
518.01 Description
1.This work shall require the Contractor to furnish and place a reinforcing fabric, crack repair system on joints or cracks as shown in the contract or as directed by the Engineer.
518.02 Material Requirements
1.The repair fabric shall consist of fiberglass grid and shall conform to the following requirements: Table 518.01 Mechanical Properties Material Fiberglass reinforcement grid coated with an elastomeric polymer Grid size 0.5 inch x 0.5 inch or 1.0 inch x 1.0 inch Tensile strength across 1100 pounds / inch Minimum Tensile strength along l e550 pounds / inch Minimum Weight 16 oz. / square yard Minimum Roll width 4.5 feet Minimum
2.Fabric reinforcement materials approved for use are shown on the Department’s Approved Products List.
518.03 Construction Methods
1.The fabric reinforcement shal l be applied immediately before the placement of the bituminous overlay. The materials and application method shall resist shoving and lifting during pl acement of the bituminous overlay.
2.The Contractor shall follow the recommendations of the manufacturer in placing the fabric reinforcing system, including preparing the surface, joints, and cracks on which the system is to be applied. Substitutions involving any element of a system will not be allowed without the written approval from the manufactu rer and concurrence of the Engineer.
3.Manufacturer installation inst ructions shall be provided to the Engineer two weeks prior to installation.
4.The fabric shall be placed on t he leveling course asphaltic concrete pavement centered on the crack or jo int. The fabric shall be placed at temperatures of 50 oF or above. The pavement surface on which the fabric is to be placed shall be dry and free of dirt, debris and other foreign matter.
5.Immediately after placement, the fabric shall be rolled with a pneumatic roller to ensure a good bonding between the fabric and the roadway. At no time will traffic, ex cept minimal construction traffic, be allowed on the placed fabric.
6.The application of the materials will be accepted by visual examination and satisfactory initial performance.
518.04 Method of Measurement
1.Fabric reinforcement repair will be measured by the total length in linear feet (meters).
518.05 Fabric Reinforcement
- 378 - 518.05 -- Basis of Payment
1.P a y I t e m P a y U n i t Fabric Reinforcement Crack Repair Linear Feet (LF) [Meter (m)]
2.Payment is full compensation for all work described in this Section and all fabric reinforcement system manufacturer's requirements. - 379 - SECTION 519 -- CRACK SEALING BITUMINOUS SURFACING
519.01 Description
1.This work shall consist of pre paring and sealing the transverse and longitudinal cracks in bitu minous surfacing at the various locations shown in the contract.
519.02 Material Requirements
1.NE-101, NE-CR18B, NE-3405, and NE-3405LM shall include the following for ASTM D5329:
a.Sections 6.4 and 12.4 “Spe cimen Preparation” shall have the reference of “177 ml (6 oz.)” replaced with “3 oz.”
b.Section 6 “Cone Penetration, Non-immersed” shall be superseded with the following exceptions:
1.Section 6.5 “Procedure” is void and superseded by the following: Place the specimen in a water bath maintained at 77 ± 0.2°F (25 ± 0.1°C) for two hours imme diately before testing. Remove the specimen from the bath and dry the su rface by shaking gently to remove free water from the surface of the s pecimen. Using the apparatus described in Section 6.3, make one determinati on at or near the center of the specimen. Take care to ensure the cone point is placed on a point in the specimen that is representat ive of the material itself, and is free of dust, water, bubbles, or other foreign materi al. When testing higher rubber content sealants, ensure that the point of the cone is not placed on a piece of rubber.
2.Section 6.6 “Report” shall be amended to include “Record the value as the penetration of the specimen in dmm units.”
c.Section 12 “Resilience” shall be superseded with the following exceptions:
1.Section 12.5 “Procedure”, void the sentence “Make determinations at three points equally sp aced from each other and less than 13 mm (1/2 inch) from the container rim.” and supersede with the sentence “Make one determination at or near the center of the tin.”
2.Section 12.6 “Report” is void. 2. Packaging a. The sealant can be packaged in either cardboard box or wholly-meltable type containers.
b.Cardboard box containers shall be manufactured from double wall kraft board producing a minimum bursting test certification of 350 PSI (241 N/cm2) and using water-resistant adhesives. The use of metal staples or fasteners of any kind will be prohibit ed for closing the lids of the boxes. Tape or other like material is acceptable.
c.The sealant shall be in meltable [300°F (149 C)] polyethylene bags.
d.Wholly-meltable type containers, and any of their components, shall be fully meltable and integrational with the sealant by the time the manufacturer’s minimum application temperature is reached.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 411–412 of 1,048.